We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's
1495what do you mean by the "bay" in a switchyard? how to determine exact number of bays in a substation?
8 65837my question is that....few days ago i had installed a three phase motor starter for an electric saw.the motor will run and make the hydraulic pressure which will be goes to pressure cylender by up and down lever.two number of limitswitches are also installed on cylinder for safety of motor.now when the arm of cylinder reaches to the upper or lower limit it will cut the motor's line.and motor will be stop.now wana know that what will i do that motor runs continue after the limitswitch cut it down but it shold not be made any pressure.pls answer me in brief.
3 3577I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer
1479Among the following Which is vector quantity? a. Flux b. permitivity c. flux density d. magnetic intensity
2 3641I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF
3566Post New Electrical Engineering Questions
I want single line diagram for AMF & DG syncronizing panel
in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?
why do we use spark detector inside the slip ring brush compartment 0ona slip ring induction motor?
What are the ratings of VCB, MCB, MCCB, SF6, ACB, and OCB?
sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.
how r charge carriers produced
what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?
what are the specifications we must look at to select a relay for any capacity motor?
there are cam operated switches - why we call cam operated , What is cam ?
What are the differences between single phase and three phase?
How can you sized or estimate the ligthning arrester current rating?
How to see the inductance in a transmission lines
At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?
R=*ΒΆ l/a
How the capacitance og capacitor volatage transformer is decided?
